Question

基本上，我需要获得5个等级的用户输入，将它们加在一起并获得平均值。在获得平均值之前，我还需要以某种方式从该数组中删除最低值。

最重要的是，我需要以某种方式循环所有这样，以便它在结束时询问“如果你想要重做这个东西，键入true，如果你完成了，则输入false”但我想知道如何首先删除最低值< / p>

顺便说一下，我还没有“正式”学会如何做数组或循环，所以所有这些都没有意义是自学。

import java.util.Scanner;
import java.util.Arrays;

class calculateGrades{
public static void main(String args[]){

    int[] grades=new int[5]; //Array for assignment grades
    int sum=0;
    int average;

    Scanner keyboard=new Scanner(System.in);

    //This loop is to take in the user input for assignment grade 
    System.out.println("please enter your 5 assignment grades: ");
    for (int fcount=0;fcount<grades.length;fcount++){
        grades[fcount]=keyboard.nextInt();
        }
    //After this loop is done, all the grades are now placed in the 
    //grades array.

    //Find the minimum value in the array.
    Arrays.sort(grades);
    int mn = grades[0];

    //This loop is to calculate the sum of the inputed array.
    for(int counter=0;counter<grades.length;counter++){
        sum=sum+grades[counter];

        }
    //Now that this array calculated the sum of the array we find the average
    average = (sum - mn) /4;

    System.out.println(average);
    System.out.println(mn);

}


}

}

那么有人可以帮助我吗？

Answer 1

不是将它从数组中删除，而是跟踪最小值，然后从总和中减去它。

如果您无法跟踪最小值，请告诉我。

Answer 2

public static void main(String args[]){

int[] grades=new int[5]; //Array for assignment grades
int sum=0;
int average;
string continue = "false";

Scanner keyboard=new Scanner(System.in);

do { // start of the program loop
//This loop is to take in the user input for assignment grade 
System.out.println("please enter your 5 assignment grades: ");
for (int fcount=0;fcount<grades.length;fcount++){
    grades[fcount]=keyboard.nextInt();
    }
//After this loop is done, all the grades are now placed in the 
//grades array.


//This loop is to calculate the sum of the inputted array.
for(int counter=0;counter<grades.length;counter++){
    sum=sum+grades[counter];

    }
//Now that this array calculated the sum of the array we find the average
average = sum/grades.length;

System.out.println(average);

System.out.println("Type true if you want to redo this stuff type false if your done");
continue = continue.nextLine(); // takes in a string input from user

} while (continue.equalsIgnoreCase("true")); // it will loop the whole line again when continue is true
}

}

你不能从数组中删除数组元素。所以像xp500建议的那样，跟踪最小值并从总和中减去，然后将等级除以grade.length -1作为mitim所说的，或者除以4，因为它是5的固定数组。

在这种情况下，我使用do while循环来重新循环整个程序。

Answer 3

如果你想实际删除该值，你应该使用类似arraylist的东西，因为正如其他人所提到的：数组是固定长度。
如果你使用了arraylist，你可以 Arrays.sort（yourArrayList）你的最低值应该是第一个。

如何在数组中删除最小值？

3 个答案: